Preparation method of open tin dioxide hollow spheres

A tin dioxide, open-type technology, applied in tin oxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of increased contact resistance, poor wettability, large contact angle, etc. Large contact area, low cost, uniform size effect
CN104876259AInactive Publication Date: 2015-09-02ZHEJIANG UNIV
3 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2015-09-02
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of nanomaterial preparation and aims at providing a preparation method of open tin dioxide hollow spheres. The preparation method of open tin dioxide hollow spheres comprises the following steps: mixing absolute ethyl alcohol with deionized water to obtain a solvent, next, dissolving sodium stannate in a solvent and thoroughly stirring to obtain a tin salt solution; next, weighing urea and adding the urea to the tin salt solution, stirring and performing ultrasonic treatment to obtain a mixed solution; next, transferring the mixed solution to a polytetrafluoroethylene lined stainless steel reaction kettle, performing a hydrothermal reaction, naturally cooling and then centrifugally separating or filtering the product of the hydrothermal reaction to obtain precipitate, and finally, washing and drying the precipitate to obtain the high-purity open hollow sphere tin dioxide powder. The tin dioxide powder prepared by use of the method is capable of avoiding floating and enrichment of SnO2 in use, improving the stability of an Ag / SnO2 and prolonging the service life of the material, and then suitable for large-scale industrial production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of preparation of nanometer materials, in particular to a method for preparing open-shaped tin dioxide hollow spheres. Background technique

[0002] Electrical contacts are the key components of electrical switches, instruments and meters, etc., and are widely used in relays, contactors and circuit breakers, and their performance directly affects the on-off capacity, service life and operational feasibility of the complete equipment. Since the 1950s, Ag / CdO electrical contact composites have been widely used due to their advantages of arc resistance, welding resistance, corrosion resistance, low contact resistance and good processing performance.

[0003] With the requirements and development trend of the whole international society and the environment on the environmental protection, long life and high reliability of electrical contact materials. Especially after the promulgation of the RoHS Act of the European Unio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More